Ran into a gem today that swaps unicorn''s signal handling to align with Heroku''s restart process, which uses TERM to indicate start-graceful-shutdown rather than QUIT[1] https://github.com/michaelfairley/unicorn-heroku I don''t have a Heroku app doing enough traffic to know if this helps with dropped connections or other issues during deployment, but I''m curious if anyone on-list has tried it out and seen benefits. Heroku still sends a KILL after 10s so we still can''t do proper USR2 rolling restarts, but this seems like a small step in the right direction. [1] https://devcenter.heroku.com/articles/ps#graceful_shutdown_with_sigterm